Standard (18 mm)

Made in the USA

Estes model rocket engines are simply the best! We have been making rocket engines for over 50 years. Estes developed the first machine to mass produce solid propellant model rocket engines which gave rocketeers a consistent and reliable way to launch rockets. Because of our quality and reliability, Estes engines are considered by many to be the standard in the model rocket industry.

Want to pack some real power? The C6-5 is your engine! This C engine is the highest impulse engine in a bulk pack. This engine will send students' rockets out of site! Estes engine bulk packs are convenient and include everything your students need to prepare their rockets for launching 24 rockets.

PLEASE NOTE: This item will ship by US Postal Service only. You MUST HAVE a physical mailbox or post office box for delivery. If you do not have a physical mail box or post office box Click Here for Special Shipping Options.

ATTENTION: Additional restrictions may apply, see full product page for details.

This two engine combo pack is to be used with two stage rockets. The B6-0 is a booster engine that has no delay or ejection charge. The B6-6 is the upper stage engine. Estes engine bulk packs are convenient and include everything your students need to prepare their rockets for launching.

PLEASE NOTE: This item will ship by US Postal Service only. You MUST HAVE a physical mailbox or post office box for delivery. If you do not have a physical mail box or post office box Click Here for Special Shipping Options.

ATTENTION: Additional restrictions may apply, see full product page for details.

The B6-4 is a medium impulse engine that delivers high altitude flights. It works great for launching larger, heavier rockets, too. Estes engine bulk packs are convenient and include everything your students need to prepare their rockets for launching.

PLEASE NOTE: This item will ship by US Postal Service only. You MUST HAVE a physical mailbox or post office box for delivery. If you do not have a physical mail box or post office box Click Here for Special Shipping Options.

ATTENTION: Additional restrictions may apply, see full product page for details.

An A8-3 engine is your best bet for students to launch their rockets and see the entire flight profile.

Estes engine bulk packs are convenient and include everything your students need to prepare their rockets for launching.

PLEASE NOTE: This item will ship by US Postal Service only. You MUST HAVE a physical mailbox or post office box for delivery. If you do not have a physical mail box or post office box Click Here for Special Shipping Options.

ATTENTION: Additional restrictions may apply, see full product page for details.

PLEASE NOTE: This item will ship by US Postal Service only. You MUST HAVE a physical mailbox or post office box for delivery. If you do not have a physical mail box or post office box Click Here for Special Shipping Options.

ATTENTION: Additional restrictions may apply, see full product page for details.

PLEASE NOTE: This item will ship by US Postal Service only. You MUST HAVE a physical mailbox or post office box for delivery. If you do not have a physical mail box or post office box Click Here for Special Shipping Options.

ATTENTION: Additional restrictions may apply, see full product page for details.

PLEASE NOTE: This item will ship by US Postal Service only. You MUST HAVE a physical mailbox or post office box for delivery. If you do not have a physical mail box or post office box Click Here for Special Shipping Options.

ATTENTION: Additional restrictions may apply, see full product page for details.

PLEASE NOTE: This item will ship by US Postal Service only. You MUST HAVE a physical mailbox or post office box for delivery. If you do not have a physical mail box or post office box Click Here for Special Shipping Options.

ATTENTION: Additional restrictions may apply, see full product page for details.

PLEASE NOTE: This item will ship by US Postal Service only. You MUST HAVE a physical mailbox or post office box for delivery. If you do not have a physical mail box or post office box Click Here for Special Shipping Options.

ATTENTION: Additional restrictions may apply, see full product page for details.

PLEASE NOTE: This item will ship by US Postal Service only. You MUST HAVE a physical mailbox or post office box for delivery. If you do not have a physical mail box or post office box Click Here for Special Shipping Options.

ATTENTION: Additional restrictions may apply, see full product page for details.